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Registros recuperados: 4
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Analysis of the population structure of Uruguayan Creole cattle as inferred from milk major gene polymorphisms Genet. Mol. Biol.
Rincón,Gonzalo; Armstrong,Eileen; Postiglioni,Alicia.
The ancestors of Uruguayan Creole cattle were introduced by the Spanish conquerors in the XVII century, following which the population grew extensively and became semi-feral before the introduction of selected breeds. Today the Uruguayan Creole cattle genetic reserve consists of 575 animals. We used the tetra primer amplification refractory mutation system polymerase chain reaction (ARMS-PCR) to analyze the kappa-casein, beta-casein, alphaS1-casein and alpha-lactoalbumin gene polymorphisms and restriction fragment length polymorphism PCR (RFLP-PCR) for the beta-lactoglobulin and the acylCoA:diacyl glycerol acyltransferase 1 (DGAT1) genes. The kappa-casein and beta-lactoglobulin genes presented very similar A and B allele frequencies, while the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: DGAT1 gene; Milk protein; SNPs; Uruguayan Creole cattle.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000300016
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Szarvasmarhafajták tejtermelésének gazdasági értékelése AgEcon
Buzas, Gyula; Szabo, Ferenc.
Azt vizsgáltuk, hogy a különböző mennyiségű, zsír- és fehérjetartalmú tejet termelő szarvasmarhafajták (holstein-fríz, magyar tarka, jersey) esetében miképpen alakulnak a tejtermelés bevételei és költségei, valamint azt, hogy a koncentráltabb tejért fizetett felárak és a feldolgozásukban jelentkező költségmegtakarítás milyen arányban állnak egymással. Megállapítható volt, hogy a tehenészetek mindhárom fajtánál, a jelenlegi árviszonyok mellett, némi jövedelmet csak a költségvetési támogatásoknak köszönhetően érnek el. A tejtermelésben a fajták versenyképessége legpontosabban a termelési érték és a takarmányköltség különbözete alapján ítélhető meg, az egyéb költségek többségének alakulása ugyanis nem a fajtától függő. A magyar tarka a tejtermelésben nem...
Tipo: Article Palavras-chave: Tejhozam; Tejzsír; Tejfehérje; Tejfeldolgozás; Felárak; Milk yield; Milk fat; Milk protein; Milk processing; Premiums; Livestock Production/Industries; Production Economics.
Ano: 2011 URL: http://purl.umn.edu/119898
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Supplementation with a mixture of whole rice bran and crude glycerin on metabolic responses and performance of primiparous beef cows R. Bras. Zootec.
Clariget,Juan Manuel; Román,Lorena; Karlen,Mauricio; Álvarez-Oxiley,Andrea; López-Mazz,Carlos; Pérez-Clariget,Raquel.
ABSTRACT - This study investigated the effect of a supplement containing whole rice bran and crude glycerin for 21 days before mating on metabolic, productive, and reproductive responses of 28 primiparous suckling beef cows. Cows were randomly assigned to a control group (CON, n = 14), grazing on grasslands, and a supplemented group (SUP, n = 14), grazing on grasslands and supplemented daily individually with 1 kg dry matter (DM) of whole rice bran + 550 mL crude glycerin (224 g kg−1 DM of methanol) per cow. After 33 days of natural mating, cows that had not expressed estrus were subjected to a fixed-time artificial insemination protocol. Ten days after the insemination program, bulls were reintroduced for 21 days. Supplementation increased milk yield...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Methanol; Milk protein; Shallow anestrus.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000100016
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Yield and composition of milk from dairy cows fed diets containing cashew nuts Rev. Ciênc. Agron.
Pimentel,Patrícia Guimarães; Reis,Ronaldo Braga; Neiva,José Neuman Miranda; Coelho,Sandra Gesteira; Pinto,Andréa Pereira.
ABSTRACT This work evaluated the production and composition of milk from dairy cows fed increasing levels of cashew nuts in the concentrate portion of the diet. Eight Holstein multiparous cows were used, between the third and fifth lactation, with an average milk yield of 28.0 ? 4.0 kg day-1, arranged in a double 4 x 4 Latin square experimental design. The assessed diets consisted of including different amounts of ground cashew nuts (CN): 0; 80; 160 and 240 g kg-1 of concentrate portion, which resulted in ether extract contents of 31.6; 46.0; 68.9 and 73.1 g kg-1 of dietary dry matter, respectively. Corn silage was used as the only roughage at a proportion of 50% and diets were formulated to be isoprotein. Diet was offered as a complete mixture. Average...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Byproduct; Conjugated linoleic acid; Lipids; Milk fat; Milk protein.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000400700
Registros recuperados: 4
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